Learn how to say Birds correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word bird:
1a warm-blooded egg-laying vertebrate animal distinguished by the possession of feathers, wings, a beak, and typically by being able to fly:
the valley is teeming with bird life
Class Aves; birds probably evolved in the Jurassic period from small dinosaurs that may already have been warm-blooded
a bird that is hunted for sport or used for food:
carve the bird and arrange on a warmed serving plate
informal, chiefly North American an aircraft, spacecraft, or satellite.
2 informal a person of a specified kind or character:
she’s a sharp old bird
3British informal a young woman or a man’s girlfriend.